If you ignore all the black people?
No, wait, that could really work! If you take the total amount of freedom across the whole country, the higher level of freedom among white people more than cancels out the non-freedom of the black people. They were, so far as we can tell, entirely free from the bureaucratic rationing and control systems of the Prussified United States.
Well, it doesn't work out exactly, because much of the white freedom came at the expense of black freedom (ex. white freedom to murder uppity blacks requires the black to lose his freedom to live unlynched), but it could totally work if you wanted to do the calculation that way.